<span>(a^2+b^2)^2
since (a+b)^2=a^2+2ab+b^2, substitute a with a^2 and b with b^2, which yields:
a^4+2(a^2*b^2)+b^4</span>
If yo want to simplify
2x-4+3x-7
2x+3x-4-7
5x-11
Mean = (12 + 13 + 14 + 9 + 7 + 8 + 15 + 10) / 8 = 88/8 = 11
Median = 7, 8, 9, 10, 12, 13, 14, 15 = 11 (between 10 and 12)
Mode = None because there are no numbers that occur more than once
Answer:
the last option -5 ≤ x ≤ 3
Step-by-step explanation:
Because the line there means what x can be so x has to be grater than -5 but less then 3 because the line does not go over 3.
Answer:
see below
Step-by-step explanation:
4(5n-7)+10n+2
Distribute
20n -28 +10n+2
Combine like terms
30n-26
Assuming you meant =
4(5n-7)=10n+2
Distribute
20n -28 =10n+2
Subtract 10n from each side
20n-10n-28 = 10n-10n+2
10n-28 =2
Add 28 to each side
10n-28+28=28+2
10n=30
Divide by 10
10n/10 =30/10
n=3
9(x+3)=4x-3
Distribute
9x+27 = 4x-3
Subtract 4x from each side
9x-4x+27 = 4x-4x-3
5x +27 =-3
Subtract 27 from each side
5x+27-27 = -3-27
5x = -30
Divide by 5
5x/5 = -30/5
x=-6
2(12-8x)=x-11x
Combine like terms
2(12-8x) = -10x
Divide by 2
12-8x = -5x
Add 8x to each side
12-8x+8x = -5x+8x
12 = 3x
Divide by 3
12/3 =3x/3
4=x